基于AVHRR和MODIS的海表温度一致性分析  

Sea surface temperature consistency analysis based on AVHRR and MODIS

作　　者：徐洋峰 李连伟[1,2] 薛存金 岳增友 刘敬一 XU Yang-feng;LI Lian-wei;XUE Cun-jin;YUE Zeng-you;LIU Jing-yi(College of Oceanography and Space Informatics,China University of Petroleum,Qingdao 266580,China;Laboratory for Marine Mineral Resources,National Laboratory for Marine Science and Technology,Qingdao 266071,China;Key Laboratory of Digital Earth Science,Chinese Academy of Sciences,Aerospace Information Research Institute,Beijing 100094,China)

机构地区：[1]中国石油大学(华东)海洋与空间信息学院,山东青岛266580 [2]海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛266071 [3]数字地球重点实验室中国科学院空天信息创新研究院,北京100094

出　　处：《海洋环境科学》2021年第1期122-132,共11页Marine Environmental Science

基　　金：中国科学院战略性先导科技专项子课题项目(XDA19060103);中央高校基本科研业务费专项资金项目(17CX02005A)。

摘　　要：本文以太平洋为研究区域,选取平均偏差、绝对偏差、标准偏差和相关系数4个误差统计指标,开展2002年7月至2009年12月MODIS SST与AVHRR SST两种SST产品的一致性分析。结果表明:(1)两种SST产品的差异在时空上分布不均匀,距平前,一致性较好的区域均分布在偏差条带(10°N附近)的南、北两边低纬度区域以及澳洲的东部海域,且二者偏差长时间稳定在±0.4℃以内;(2)在南美洲中西部海域以及马来群岛附近海域,两种SST产品差异具有明显的季节性规律,并且在马来群岛附近海域,两种传感器存在一定程度的原理机制区别;(3)在南半球中纬度太平洋中部海域和北半球中纬度太平洋中部海域,季节性因素并不是造成两种SST产品差异的主要原因;(4)距平后,其中一致性较好的区域主要分布在偏差条带(10°N附近)的南、北两边低纬度区域以及澳洲的东部海域,其他区域在距平后的差异更接近同一水平;(5)两种SST数据产品中,夜间降轨(Night)产品之间的差异大于白天升轨(Day),距平后,这种差异大大缩小。Focusing on the Pacific,four error statistical indicators:average deviation,absolute deviation,standard deviation,and correlation coefficient are selected to conduct a consistency analysis of two SST data,MODIS SST and AVHRR SST,from July 2002 to December 2009 in this paper.The results show that:(1)The difference between the two SST data is unevenly distributed in space and time.Before the anomaly,the area with better consistency is distributed in the low-latitude on the south and north sides of the deviation band(around 10°N)and the eastern seas of Australia,and the deviation is stable within±0.4℃ for a long time;(2)In the seas of central and western South America and near the Malay Islands,the difference between the two SST data have obvious seasonal rules,and the two sensors have a certain degree of mechanism difference near the Malay Islands;(3)Season is not the main reason for the difference between the two SST data In the central of the mid-latitude of Pacific in the southern and northern hemisphere;(4)After the anomaly,the area with better consistency is mainly distributed in the low-latitude on the south and north sides of the deviation band(around 10°N)and the eastern seas of Australia.The difference in the other areas after the anomaly are closer to the same level;(5)Of the two SST data,the difference between the night derailment(Night)data is greater than the daytime ascension(Day).After the anomaly,this difference is greatly reduced.

关 键 词：海表温度 AVHRR MODIS 一致性 太平洋 

分 类 号：X16[环境科学与工程—环境科学]